R Observatory: Metrics for mutator version 0.2.1

Balamuta, James Joseph

mutator

0.2.1

Mutation Testing

0packages depend

10downloads / year

89.3%test coverage

11/11checks pass

Overview

About

Maintained by Pierre Donat-BouilludFirst published 2026-08-021 releasesCRAN page ↗GitHub ↗

Performs mutation testing for 'R' packages to assess the effectiveness of a test suite. It mutates source files, runs package tests against each mutant, and reports which mutants were killed, survived, or timed out. Parallel execution is supported for larger code bases. The optional 'imputesrcref' package, available from https://github.com/PRL-PRG/imputesrcref, improves source locations when installed.

Install

R (CRAN)pak (dev)Fedora (COPR)openSUSE (OBS)

install.packages("mutator", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("PRL-PRG/mutator")

Development version from PRL-PRG/mutator. Installs pak first if it is not already available.

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-mutator

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-mutator

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

11OK

Slowest check: 7.7 min · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 0.97

89.3%

Coverage · measured lines

100%

Documentation · exports

9

Dependencies · direct

Check history

OK2026-08-05
11 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-08-04
8 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-08-03
6 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 1,131 wordsVignettesYes · dynamicpkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 83%
Documented parameters: 99%
Return-value docs: 100%
References docs: 0%

Downloads

10

CRAN downloads in the past year

Rank #24,691 · ~0/day · ~1/mo

mutator Releases R versions

Daily download trend is not available in this view yet.

1030 days

1090 days

101 year

Compare downloads with other packages →

Repository

GitHub ↗ prl-prg/mutator

9Stars

1Forks

2Open issues

0Open PRs

5Releases

mutation-testingr-languagetest-automationtesting

License GPL-3.0 · Last activity 2026-08-04

Repository practices

Upstream repositoryBeta

Repository github.com/prl-prg/mutator is linked, but repository-practices checks have not run for it yet.

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

17 external dependencies (excludes base and recommended)

Depends (0)

none

Imports (9)

jsonlite httr pkgload testthat future furrr callr covr R6

LinkingTo (1)

testthat

Suggests (7)

xml2 pkgbuild cli pbmcapply knitr rmarkdown tinytest

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

People & History

People (2)

Maintainer (1)

Pierre Donat-Bouillud

Author, Maintainer, Copyright holder

Authors (2)

Pierre Donat-Bouillud

Author, Maintainer, Copyright holder

Assanali Amandykov

Author, Copyright holder

Copyright holders (2)

Pierre Donat-Bouillud

Author, Maintainer, Copyright holder

Assanali Amandykov

Author, Copyright holder

Package Timeline

1 release. R releases are shown for context.

0.2.1Latest
2026-08-02 · current release
R
R 4.6.0 released · 2026-04-24

Package metadata

First published: 2026-08-02
Total releases: 1 / 1 yrs
License: GPL (>= 3) OSI
Download size: not tracked yet
Installed size: not tracked yet
With dependencies: not tracked yet

Cite

Cite this package

Start here. This is the citation for the package itself.

citation("mutator")

CRAN DOI

https://doi.org/10.32614/CRAN.package.mutator

BibTeX, derived from DESCRIPTION

@Manual{mutator,
  title  = {mutator: Mutation Testing},
  author = {Donat-Bouillud, Pierre and Amandykov, Assanali},
  year   = {2026},
  note   = {R package version 0.2.1},
  doi    = {10.32614/CRAN.package.mutator},
  url    = {https://CRAN.R-project.org/package=mutator}
}

Derived from the package DESCRIPTION, not from a citation file the authors wrote. If they publish one later, prefer it.

This is the citation for the package. It is not a citation for the R Observatory.

Cite this page

Use this when the claim is about a measurement on this page.

BibTeX

@misc{robservatorymutator,
  author    = {Balamuta, James Joseph},
  title     = {{R} {Observatory}: Metrics for {mutator} version 0.2.1},
  year      = {2026},
  publisher = {HJJB, LLC},
  url       = {https://r-observatory.thecoatlessprofessor.com/packages/mutator},
  note      = {Data set. Data release v2026-08-05}
}

APA

Balamuta, J. J. (2026). R Observatory: Metrics for mutator version 0.2.1 [Data set]. HJJB, LLC. Data release v2026-08-05. https://r-observatory.thecoatlessprofessor.com/packages/mutator

RIS

TY  - DATA
AU  - Balamuta, James Joseph
TI  - R Observatory: Metrics for mutator version 0.2.1
PY  - 2026
PB  - HJJB, LLC
N1  - Data release v2026-08-05
UR  - https://r-observatory.thecoatlessprofessor.com/packages/mutator
ER  -

In prose

These package metrics were obtained from the R Observatory (Balamuta, 2026), data release v2026-08-05, https://r-observatory.thecoatlessprofessor.com/packages/mutator.

Bound to data release v2026-08-05, which is what makes the numbers on this page reproducible. See how to cite.

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